.hidden {
	display: none;
}

.board {
	text-align: center;
	position: relative;
}
.mask {
	position: absolute;
	margin-left: 50%;
	height: 100%;
	width: 50%;
	top: 0px;
	left: 0px;
}

.light {
	display: block;
	position: absolute;
	width: 0px;
	height: 0px;
	border-radius: 50%;
	background-color: transparent;
	box-shadow: 0px 0px 30px 30px #c0c000;
	opacity: 0;
}

.textbox {
	display: inline-block;
	width: 350px;
	height: 30px;
	background-color: white;
	border-radius: 10px;
	margin-top: 20px;
	margin-left: -100%;
	vertical-align: top;
	margin-right: 10px;
	box-shadow: 0px 0px 10px 0px white;
	opacity: 0.7;
	padding: 10px 20px;
}
.register {
	display: inline-block;
	width: 45px;
	height: 60px;
	background-image: url(/static/img/key.png);
	background-size: 100% 100%;
	margin-top: 15px;
	vertical-align: top;
	position: relative;
	cursor: pointer;
}
.register.active {
	background-image: url(/static/img/key-pressed.png);
}

.register-indicator {
	width: 20px;
	height: 3px;
	margin-left: 50%;
	left: -10px;
	top: 15px;
	position: absolute;
	border-radius: 3px;
	border-bottom-width: 3px;
	border-bottom-style: solid;
	background-color: #000000;
	border-bottom-color: #cccccc;
}
.register-indicator.active {
	background-color: #00d000;
	border-bottom-color: #90d090;
}